support remove user

CHANGELOG.md

@@ -27,6 +27,7 @@ x.x.x Release notes (yyyy-MM-dd)
 * Support EmailPassword retry custom user confirmation functions. ([#484](https://github.com/realm/realm-dart/pull/484))
 * Expose currentUser property on App. ([473](https://github.com/realm/realm-dart/pull/473))
 * Support logout user. ([#476](https://github.com/realm/realm-dart/pull/476))
+* Support remove user. ([#492](https://github.com/realm/realm-dart/pull/492))
 
 ### Fixed
 * Fixed an issue that would result in the wrong transaction being rolled back if you start a write transaction inside a write transaction. ([#442](https://github.com/realm/realm-dart/issues/442))

lib/src/app.dart

@@ -151,6 +151,11 @@ class App {
 
     return await realmCore.logOut(this, user);
   }
+
+  /// Removes a [user] and their local data from the device. If the user is logged in, they will be logged out in the process.
+  Future<void> removeUser(User user) async {
+    return await realmCore.removeUser(this, user);
+  }
 }
 
 /// @nodoc

lib/src/native/realm_core.dart

@@ -1078,6 +1078,20 @@ class _RealmCore {
       return userHandles;
     });
   }
+
+  Future<void> removeUser(App app, User user) async {
+    final completer = Completer<void>();
+    _realmLib.invokeGetBool(
+        () => _realmLib.realm_app_remove_user(
+              app.handle._pointer,
+              user.handle._pointer,
+              Pointer.fromFunction(void_completion_callback),
+              completer.toPersistentHandle(),
+              _deletePersistentHandleFuncPtr,
+            ),
+        "Remove user failed");
+    return completer.future;
+  }
 }
 
 class LastError {